Physicochemical characteristics of the formulated culture media using locally available root crops

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Research Paper 07/10/2023
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Physicochemical characteristics of the formulated culture media using locally available root crops

Abstract

The study aimed to develop fungal culture media in dehydrated form utilizing selected locally available root crops such as cassava (Manihot esculenta), sweet potato (Ipomoea batatas), ube (Dioscorea alata L.), taro (Colocasia esculenta) and potato (Solanum tuberosum). Specifically, the objectives of the study was to determine the physicochemical characteristics of the formulated culture media such as the color, clarity, gel strength, ash, moisture, crude protein, crude fat and total carbohydrate contents. From the formulated combination, 39 grams of the formulated culture medium was suspended in 1000 ml of distilled water. The agar powder acted as a gelling agent for the medium. The resulting solution was boiled until all constituents were dissolved. It was autoclaved for 15 minutes at 121oC. The pH was adjusted based on the following requirement of the fungi: Saccharomyces cerevisiae 4-6, Aspergillus niger 5.5 and Rhizopus stolonifer 7-8. The media was dispensed into sterile Petri dish, taking care to distribute equally at approximately 20-25ml per petri dish. Based on the findings of the study: (1) the formulated culture media possessed the necessary physicochemical characteristics of culture media for the culture of fungi; and (2) Cassava, sweet potato, ube, taro and potato with dextrose and agar powder showed comparable effects on the growth of fungi under the study. For future researches and studies, the following may be considered: (1) the formulated fungal culture media utilizing local rootcrops are recommended for the cultivation of Saccharomyces cerevisiae, Aspergillus niger and Rhizopus niger; and (2) a study may be conducted on the shelf-life of the formulated fungal culture media.

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